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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2020 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
import struct TSCBasic.ProcessResult
private func numberToEmojis(_ number: Int, numEmojis: Int) -> String {
let emojis = ["🟥", "🟩", "🟦", "⬜️", "🟪", "⬛️", "🟨", "🟫"]
var number = abs(number)
var result = ""
for _ in 0..<numEmojis {
let (quotient, remainder) = number.quotientAndRemainder(dividingBy: emojis.count)
result += emojis[remainder]
number = quotient
}
return result
}
fileprivate extension String {
/// Returns a two-character emoji string that allows easy differentiation between different task IDs.
///
/// This marker is prepended to every line in the index log.
var emojiRepresentation: String {
// Run .hashValue to make sure we semi-randomly pick new emoji markers for new tasks
return numberToEmojis(self.hashValue, numEmojis: 3)
}
}
/// Add an emoji hash of the given `taskID` to the start of every line in `message`.
package func prefixMessageWithTaskEmoji(taskID: String, message: String) -> String {
var message: Substring = message[...]
while message.last?.isNewline ?? false {
message = message.dropLast(1)
}
let messageWithEmojiLinePrefixes = message.split(separator: "\n", omittingEmptySubsequences: false).map {
"\(taskID.emojiRepresentation) \($0)"
}.joined(separator: "\n")
return messageWithEmojiLinePrefixes
}
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